IBM MQ including MQ Explorer installed on Linux x86-64 environment. After the completion of installation, all directories under opt/mqm/mqexplorer/eclipse are created with owner "555" (non-existant user) and group mqm. This vulnerability allows a local user to alter the contents of the opt/mqm/mqexplorer/eclipse directory and make the product unusuable.
DESCRIPTION: IBM WebSphere MQ could allow a local user to write to a file or delete files in a directory they should not have access to due to improper access control.
CVSS Base Score: 4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/117926 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
Affected Products and Versions
IBM MQ v220.127.116.11
IBM MQ v9.0.1
Workarounds and Mitigations
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31 May 2017: Original version published
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
15 June 2018